topic Re: broken filter threads in EF & RF Lenses

broken filter threads

JSingler — Sun, 11 May 2014 17:06:45 GMT

The filter mounting threads broke on the end of my 75-300mm III lens. All I need is a new plastic ring that screws onto the end of the lens. I am unable to use my lens cap or lens hood

Re: broken filter threads

ebiggs1 — Mon, 12 May 2014 14:08:34 GMT

Send it in.

Re: broken filter threads

MikeSowsun — Mon, 12 May 2014 16:52:31 GMT

A professional repair might cost more than the lens is worth. That lens routinely sells for less than $100 on ebay. 75-300mm III SOLD on ebay

You might be able to buy the part for about $19 and replace it yourself. It looks like it just unscrews...

Front ring from 75-300mm II

It might also be a good excuse to upgrade. You could sell the 75-300 for what ever you can get, and then buy a used 55-250 IS for about $150. The 55-250 is optically better AND had image stabilization.

Is this what your lens looks like now?

Re: broken filter threads

Skirball — Mon, 12 May 2014 19:57:15 GMT

I'd either super glue the hood in place or follow Mike's advice and upgrade. It's not worth repairing. I saw a refurbished 55-250 for just over $100 the other day. Canon's website is down otherwise I'd link it. Refurbished to original specs, with warranty, for a much better lens. There's no

Re: broken filter threads

Johnsonanna02 — Mon, 10 Jul 2017 12:40:25 GMT

I have another 75-300 that no longer works. Can I switch it?

Re: broken filter threads

JoshBlevins — Sat, 05 May 2018 09:28:03 GMT

the same thing happened to me, do you think i couls sand off my broken thread and attach a 55 to 58mm step up ring?

Re: broken filter threads

shadowsports — Sat, 05 May 2018 14:44:27 GMT

Was readng your thread until I got to the "sanding" part. Mike's part link above still shows as available.$20. eBay has these as well under $100. I don't buy this type of equipment from eBay myself, but you are free to choose.

I saw a fully working replacement (refurb) on Amazon (super cheap) and Canon still sells MkIII $159. Or simply upgrade. The 75-300 was a workhorse in its day, but has been surpassed in quality, function and IQ.